2 * Copyright (c) 2010, Google, Inc.
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 * VP8 decoder support via libvpx
26 #define VPX_CODEC_DISABLE_COMPAT 1
27 #include <vpx/vpx_decoder.h>
28 #include <vpx/vp8dx.h>
30 #include "libavutil/common.h"
31 #include "libavutil/imgutils.h"
36 typedef struct VP8DecoderContext {
37 struct vpx_codec_ctx decoder;
40 static av_cold int vpx_init(AVCodecContext *avctx,
41 const struct vpx_codec_iface *iface)
43 VP8Context *ctx = avctx->priv_data;
44 struct vpx_codec_dec_cfg deccfg = {
45 /* token partitions+1 would be a decent choice */
46 .threads = FFMIN(avctx->thread_count, 16)
49 av_log(avctx, AV_LOG_INFO, "%s\n", vpx_codec_version_str());
50 av_log(avctx, AV_LOG_VERBOSE, "%s\n", vpx_codec_build_config());
52 if (vpx_codec_dec_init(&ctx->decoder, iface, &deccfg, 0) != VPX_CODEC_OK) {
53 const char *error = vpx_codec_error(&ctx->decoder);
54 av_log(avctx, AV_LOG_ERROR, "Failed to initialize decoder: %s\n",
56 return AVERROR(EINVAL);
62 // returns 0 on success, AVERROR_INVALIDDATA otherwise
63 static int set_pix_fmt(AVCodecContext *avctx, struct vpx_image *img)
65 if (avctx->codec_id == AV_CODEC_ID_VP8 && img->fmt != VPX_IMG_FMT_I420)
66 return AVERROR_INVALIDDATA;
68 case VPX_IMG_FMT_I420:
69 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
71 #if CONFIG_LIBVPX_VP9_DECODER
72 case VPX_IMG_FMT_I422:
73 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
75 #if VPX_IMAGE_ABI_VERSION >= 3
76 case VPX_IMG_FMT_I440:
77 avctx->pix_fmt = AV_PIX_FMT_YUV440P;
80 case VPX_IMG_FMT_I444:
81 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
83 #ifdef VPX_IMG_FMT_HIGHBITDEPTH
84 case VPX_IMG_FMT_I42016:
85 if (img->bit_depth == 10) {
86 avctx->pix_fmt = AV_PIX_FMT_YUV420P10LE;
88 } else if (img->bit_depth == 12) {
89 avctx->pix_fmt = AV_PIX_FMT_YUV420P12LE;
92 return AVERROR_INVALIDDATA;
94 case VPX_IMG_FMT_I42216:
95 if (img->bit_depth == 10) {
96 avctx->pix_fmt = AV_PIX_FMT_YUV422P10LE;
98 } else if (img->bit_depth == 12) {
99 avctx->pix_fmt = AV_PIX_FMT_YUV422P12LE;
102 return AVERROR_INVALIDDATA;
104 #if VPX_IMAGE_ABI_VERSION >= 3
105 case VPX_IMG_FMT_I44016:
106 if (img->bit_depth == 10) {
107 avctx->pix_fmt = AV_PIX_FMT_YUV440P10LE;
109 } else if (img->bit_depth == 12) {
110 avctx->pix_fmt = AV_PIX_FMT_YUV440P12LE;
113 return AVERROR_INVALIDDATA;
116 case VPX_IMG_FMT_I44416:
117 if (img->bit_depth == 10) {
118 avctx->pix_fmt = AV_PIX_FMT_YUV444P10LE;
120 } else if (img->bit_depth == 12) {
121 avctx->pix_fmt = AV_PIX_FMT_YUV444P12LE;
124 return AVERROR_INVALIDDATA;
129 return AVERROR_INVALIDDATA;
133 static int vp8_decode(AVCodecContext *avctx,
134 void *data, int *got_frame, AVPacket *avpkt)
136 VP8Context *ctx = avctx->priv_data;
137 AVFrame *picture = data;
138 const void *iter = NULL;
139 struct vpx_image *img;
142 if (vpx_codec_decode(&ctx->decoder, avpkt->data, avpkt->size, NULL, 0) !=
144 const char *error = vpx_codec_error(&ctx->decoder);
145 const char *detail = vpx_codec_error_detail(&ctx->decoder);
147 av_log(avctx, AV_LOG_ERROR, "Failed to decode frame: %s\n", error);
149 av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n",
151 return AVERROR_INVALIDDATA;
154 if ((img = vpx_codec_get_frame(&ctx->decoder, &iter))) {
155 if ((ret = set_pix_fmt(avctx, img)) < 0) {
156 #ifdef VPX_IMG_FMT_HIGHBITDEPTH
157 av_log(avctx, AV_LOG_ERROR, "Unsupported output colorspace (%d) / bit_depth (%d)\n",
158 img->fmt, img->bit_depth);
160 av_log(avctx, AV_LOG_ERROR, "Unsupported output colorspace (%d) / bit_depth (%d)\n",
166 if ((int) img->d_w != avctx->width || (int) img->d_h != avctx->height) {
167 av_log(avctx, AV_LOG_INFO, "dimension change! %dx%d -> %dx%d\n",
168 avctx->width, avctx->height, img->d_w, img->d_h);
169 ret = ff_set_dimensions(avctx, img->d_w, img->d_h);
173 if ((ret = ff_get_buffer(avctx, picture, 0)) < 0)
175 av_image_copy(picture->data, picture->linesize, (const uint8_t **)img->planes,
176 img->stride, avctx->pix_fmt, img->d_w, img->d_h);
182 static av_cold int vp8_free(AVCodecContext *avctx)
184 VP8Context *ctx = avctx->priv_data;
185 vpx_codec_destroy(&ctx->decoder);
189 #if CONFIG_LIBVPX_VP8_DECODER
190 static av_cold int vp8_init(AVCodecContext *avctx)
192 return vpx_init(avctx, &vpx_codec_vp8_dx_algo);
195 AVCodec ff_libvpx_vp8_decoder = {
197 .long_name = NULL_IF_CONFIG_SMALL("libvpx VP8"),
198 .type = AVMEDIA_TYPE_VIDEO,
199 .id = AV_CODEC_ID_VP8,
200 .priv_data_size = sizeof(VP8Context),
203 .decode = vp8_decode,
204 .capabilities = CODEC_CAP_AUTO_THREADS | CODEC_CAP_DR1,
206 #endif /* CONFIG_LIBVPX_VP8_DECODER */
208 #if CONFIG_LIBVPX_VP9_DECODER
209 static av_cold int vp9_init(AVCodecContext *avctx)
211 return vpx_init(avctx, &vpx_codec_vp9_dx_algo);
214 AVCodec ff_libvpx_vp9_decoder = {
215 .name = "libvpx-vp9",
216 .long_name = NULL_IF_CONFIG_SMALL("libvpx VP9"),
217 .type = AVMEDIA_TYPE_VIDEO,
218 .id = AV_CODEC_ID_VP9,
219 .priv_data_size = sizeof(VP8Context),
222 .decode = vp8_decode,
223 .capabilities = CODEC_CAP_AUTO_THREADS | CODEC_CAP_DR1,
224 .init_static_data = ff_vp9_init_static,
226 #endif /* CONFIG_LIBVPX_VP9_DECODER */